Ahmed, M. N., N. R. . Saha, and M. S. Islam. “Prediction of the Need for Niv in Patients With Acute Exacerbation of Chronic Obstructive Pulmonary Disease: A Comparative Study Between Decaf And Modified Decaf Score”. Bangladesh Journal of Medicine, vol. 34, no. 20, May 2023, pp. 208-9, doi:10.3329/bjm.v34i20.66162.